Comparative Assessment of Cuspal Deflection in Premolars Restored with Bulk-Fill and Conventional Composite Resins

Yarmohammadi, Ebrahim; Kasraei, Shahin; Sadeghi, Y

doi:10.18502/fid.v16i6.3439

Cited by 7 publications

(2 citation statements)

References 25 publications

(32 reference statements)

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“…Several studies interpreted that different bulk-fill materials have lower cuspal deflection than conventional materials (10,11). Others stated that there were no significant differences between bulk fill material when bulk insertion and conventional materials used in incremental technique (12,13). Another most common problem associated with composite material is the poor adaptation and marginal gap formation leading to microleakage, postoperative sensitivity, and secondary caries.…”

Section: Introductionmentioning

confidence: 99%

Cuspal Deflection and Marginal Gap of Class II MOD Using Preheating Bulk-Fill Composite with Different Application Techniques

J. Ebrahim,

H. Abd-alla

2023

TJDS

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The novel bulk-fill composite to reduces time consumption and overcomes sensitive incremental techniques. Cuspal deflection and marginal gap are the common problems of composite material restoration. This in vitro study was conducted to evaluate the cuspal deflection and marginal gap of CL II MOD cavity restored with preheated One bulk-fill composite resin applied with different application techniques. Methodology: 48 upper 1st premolar teeth were prepared as CL II MOD cavities to be restored with One bulk-fill restorative composite resin without (Group A) or with preheating (Group B). Each group (n=24) was subdivided into three subgroups (n=8): A1 and B1 were restored in one increment, A2 and B2 were restored using two increments, and A3 and B3 were filled using a sublayer of a flowable composite resin. The intercuspal distance of the buccal and palatal cusps was recorded before preparation, after 5 minutes, and 24 hours from the restoration. The cuspal deflection (CD) was calculated by subtracting intercuspal distance after restorat ion (5 minutes or 24 hours) from before preparation for all subgroups. The marginal gaps were recorded from images by scanning electron microscopy (SEM) for both the proximal and gingival margins. The mean values of the data we re analyzed statistically using one-way ANOVA and paired t -test at p<0.05. Preheating of One bulk-fill resin did not pr oduce a significant effect on cuspal deflection compared with the control (p>0.05) however, the incremental layering of One bulk-fill composite recorded significantly lower cuspal deflection with or without preheating. While preheating of bulk-fill produced a significant decrease of both marginal gaps compared with the control subgroups (p≤0.05). Preheating One bulk-fill composite before cu ring did not influence the cuspal deflection while imp roved marginal adaptation in different application techni ques. The incremental technique significantly reduced cuspal deflection and marginal gap.

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Section: Introductionmentioning

confidence: 99%

Cuspal Deflection and Marginal Gap of Class II MOD Using Preheating Bulk-Fill Composite with Different Application Techniques

J. Ebrahim,

H. Abd-alla

2023

TJDS

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“…Otra de las características importantes de las resinas Bulk-Fill es su mayor translucidez, la cual hace posible una mayor profundidad de polimerización y, en consecuencia, trabajar con grandes incrementos del material (3). Se ha demostrado que no existen diferencias significativas entre el desempeño clínico entre una resina convencional y una resina Bulk-Fill (4). Sin embargo, la eficacia de la polimerización relacionada a resinas colocadas en grandes volúmenes no se ha estudiado en diferentes situaciones clínicas como en restauraciones Clase 2 o en dientes con tratamiento de conducto en las que la luz necesaria para polimerizar zonas profundas puede minimizarse por la distancia entre la guía de la lámpara y la resina compuesta.…”

Section: Introductionunclassified

Evaluación del tiempo de exposición de una resina Bulk-Fill en preparaciones profundas

Vásquez-Castro

Portella-Atamari

Melendez

et al. 2022

Rev Estomatol Herediana.

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Antecedentes: Las resinas compuestas tipo Bulk-Fill (BF) son usadas en piezas posteriores con preparaciones extensas y profundas. Uno de sus beneficios más resaltantes es que, puede ser utilizada en incrementos de 4 a 5 mm, disminuyendo el tiempo de trabajo clínico. Sin embargo, en dientes con tratamientos de conductos estas preparaciones podrían tener mayor profundidad. Objetivos: Determinar el tiempo de fotoactivación necesario para polimerizar una resina Bulk-Fill ubicada en zonas profundas. Material y Métodos: En el presente estudio experimental in vitro, se confeccionaron especímenes de resina compuesta Filtek One Bulk Fill (3M ESPE, St. Paul, EE.UU.) de 5x5x5 mm color A2 fotoactivado a una distancia/tiempo de 0 mm/10 s, 0 mm/20 s, 3 mm/10 s, 3 mm/20 s, 3 mm/30 s y 3 mm/40 s (n=5). La microdureza superficial se registró en la superficie y en la base de cada espécimen. Resultados: El mayor valor de microdureza se registró en el grupo BF 0 mm/20 s y BF 3 mm/40 s (p<0,05), seguido por los grupos BF 3 mm/20 s y BF 3 mm/30 s (p>0,05). Los menores valores de microdureza se encontraron en los grupos BF 0 mm/10 s y BF 3 mm/10 s. Conclusión: Se requiere de 40 s de fotoactivación para polimerizar una resina Bulk-Fill ubicada en zonas profundas, cuando la lámpara está a una distancia de 3 mm de la superficie de la resina.

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Cuspal Deflection and Marginal Integrity of Class II Cavities Restored with Bulk-fill Resin Composites

Duarte,

Somacal,

Braga

et al. 2023

TODENTJ

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Objective: This laboratory study aims to assess the cuspal deflection, adaptation, and marginal sealing of premolars restored with bulk-fill resin composites. Methods: Fourty-four premolars received class II preparations (distal and mesial boxes located 1 mm above and 1 mm below the cementoenamel junction, respectively). The teeth were distributed into four groups according to the resin composite used for restoration (n=11): G1 (control): Filtek Z250 XT; G2: Filtek Bulk-Fill; G3: Tetric N-Ceram Bulk-Fill; G4: Aura Bulk-Fill. A digital micrometer was used to measure the cuspal deflection before and after the restorative procedures. Replicas in epoxy resin of the restored teeth were achieved before and after thermal cycles. The cervical margins were observed by SEM at 200x magnification to obtain the percentage of continuous margins (%CM). After thermal cycles, the samples were immersed in a silver nitrate solution, and the microleakage was analyzed in the cervical margins. Results: ANOVA showed no significant differences in the cuspal deflection and %CM among the resin composites. Student’s t-test showed a significant decrease in the %CM after thermal cycles for all resin composites at the cervical margin in dentin. There was higher microleakage at the dentin margin for all the resin composites. Conclusion: Bulk-fill resin composites had comparable behavior to a conventional composite in regard to the cuspal deflection, adaptation, and marginal sealing parameters.

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Comparative Assessment of Cuspal Deflection in Premolars Restored with Bulk-Fill and Conventional Composite Resins

Cited by 7 publications

References 25 publications

Cuspal Deflection and Marginal Gap of Class II MOD Using Preheating Bulk-Fill Composite with Different Application Techniques

Cuspal Deflection and Marginal Gap of Class II MOD Using Preheating Bulk-Fill Composite with Different Application Techniques

Evaluación del tiempo de exposición de una resina Bulk-Fill en preparaciones profundas

Cuspal Deflection and Marginal Integrity of Class II Cavities Restored with Bulk-fill Resin Composites

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